Island



6 r h S w e e h S 3 T N E W BL EP Gm G RN I Dm K NU A T (No Model.)

No. 529,95 Patented Nov. 27, 1894.

(No Model.) I v 3 Sheets-Sheet 2.

' 0. D. ROGERS.

' TACK DRIVING IMPLEMENT.

I Nq.. 529,958. Patented Nov. 27,1894.

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3 Sheets-Sheet 3.

(No Model.)

0. D. ROGERS. TACK DRIVING IMPLEMENT.

No. 529,958 Patented Nov. 27, 1894.

. mm D c UNITE STATES PATENT OFFICE.

CHARLES D. ROGERS, OF PROVIDENCE, RHODE ISLAND.

- TACK-DRIVING IMPLEMENT.

SPECIFIGATION forming part of Letters Patent No. 529,958, dated November 27, 1894. Application filed July 20, 1894:. Serial No. 518,128 (No model.)

To aZZ whom it may concern.-

Be it known that 1, CHARLES D. ROGERS, a.

Implements; and I do hereby declare the following to bea full, clear. and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My present invention, forming the subject of this application for Letters Patent, relates to a machine or implement for automatically feeding and driving tacks or nails, and it consists in certain novel features and combinations which are fully described in the accompanying specification and specifically pointed out in the claims.

In machines of the class above referred to, but more especially such as are employed for lasting boots and shoes, it has been usual to use tacks mounted or set in a narrow strip of paper or other inexpensive flexible material. The same after being introduced into the machine is fed along. intermittingly by the ma-' nipnlation of the driver-carrying plunger in driving the tacks into the boot or shoe being lasted. In some instances, however, handtacking implements have been provided with a fixed or stationary receptacle for containing loose tacks from which receptacle they are conducted to a feeder by means of a comparatively long and exposed runway.

The objects I have in view are to simplify and render more efficient the class of tackdrivers provided with reservoirs for the tacks. By means of my improvement tackers may be produced which cost less, are lighter, more compact, more positive in action and can be operated more easily and quickly than implements of this class hitherto employed for lasting boots and shoes.

In the accompanying three sheets of drawings, Figure 1, Sheet 1, is a side elevation of my improved tack-driving implement. Fig. 2 is a vertical transverse sectional view, taken on line m a", Fig. 1, showing the plunger, &c., in the normal position preparatory to inserting the tack or nail. Fig.3 is a similar sectional view, showing the relation of said parts at the instant of completion of the tack-driving operation. Fig. 4, Sheet 2, is a side elevation, similar to Fig. 1, but viewed from the opposite side, having the front half of the shell or casing removed. Fig. 5 is a similar view, the reservoir, however, being sectionally represented, the relation of the parts corresponding with the position shown in Fig. 3. Fig. 6 is a horizontal sectional view, taken substantially on line 0 0 of Fig. 5. Fig. 7, Sheet 3, is a transverse sectional view, enlarged, taken on line w a: of Fig. 5. Fig. 8 is a partial side elevation, in enlarged scale, of the feeder, 850., corresponding with Fig. 5. Fig. 9 is a view of the same, showing the separator, &c., in the act of detaching the forward nail or tack from the column preparatory to being driven, and Fig. 10 is a perspective view of the agitator-plate detached.

My improved tack-driver complete is indicated on the drawings by A. It is provided with a substantially cylindrical-shaped shell or body portion a, in halves, having a lateral hollow extension a; screws 8 being employed for removably securing the two halves together. The upper end of the shell is secured to an annular ring, or rim 0 the latter being provided at one side with an upwardly extending projection 0 (shown sectionally in Figs. 2 and 3) arranged to form a combined bearing and guide for the-two simultaneously reciprocating plungers b and I) soon to be described. A thin cover a is fitted to turn or swing on said extension 0 the fixed ring 0 being used to retain the cover in place.

Within the casing a is fitted avertically movable tack-holding reservoir 1"; its lower end 1- being cone-shaped or beveled; the top end being open, or if desired it may be provided with'a removable cover to prevent the tacks from moving about too freely. The reservoir is rigidly secured to the plunger or carrier b before referred to.

The barrel portion of the casing a is bored or turned out to a substantially uniform diameter throughout its length. Its lower portion, at each side, is recessed along the joint to receive the fixed runway plates e, o The main plate 6 consists of two parts separated transversely to form a space 6 to freely receive the shanks of the nails or tacks y. The upper or working side of said plate is arranged at an angle with the axis of the casing, the two adjacent or oppositely facing edges 6 being inclined to form a substantially V-shaped groove adapted to receive the heads of thetacks. See Fig.7, &c. The other member e of the runway plates projects into the extension a of the casing and is counter bored at p to receive the movable drivingplunger 1). The lower portion of the plate (2 is drilled to freely receive the driver 19, the latter being secured to plunger 17. The upper side 6 of plate e is also arranged at an angle with the axis of the casing and forming with the corresponding side of plate 6 afixed V-shaped depression in the center of the easing chamber. The bottom end and the opposite side walls of the reservoir are cut or slitted vertically to receive the said runway; the width of the latter, in a vertical direction, being equal to or slightly exceeding the stroke of the reservoir; the construction being such that when in the normal position, as in Fig. 4, the upper surface of the beveled end 1" practically coincides with the upper inclined sides of the runway, thereby deflecting the tacks into the runway groove. The said two plungers, b and b, are rigidly secured to an enlarged head or movable handle m arranged above thecasing. The driver-plunger b is fitted to travel freely back and forth in the vertical hole 13 formed in the casing coutiguous to the reservoir, and also in the said counter-bored portion of the fixed-plate 6 as clearly shown. The lower end i of the plunger is beveled and adapted to engage the pivotally mounted vertically extending cut-off lever z'. This lever (see Figs. 1 to 3) is fitted to vibrate in an opening formed in what may be termed the backside of the casing, and substantially parallel with the plunger I). Said lever is provided with upper and lower projections or trip-dogs 2', 4?, respectively; the lever fulcrum or pivot being practically intermediate of said dogs.

The lower portion of the lever is bent and jointed to a horizontal cut-off pin or pointed separator 71. located between the hole or chamber 19' (containing the driver) and the bore of the barrel. This pin his employed both for holding the row or column of tacks, mounted in the inclined runway, in check and also fol-detaching or separating the foremost tack from the next succeeding one during each double-reciprocation of the plungers.

The side of plunger 1) contiguous to the lever is cut away at i; the relation of the thus reduced portion 2' to the beveled end i and to the said trip-dogs being such that the point of the pin his retracted or withdrawn from the column of tacks after the end of the driverp in its down ward stroke passes below the pin, the row of tacks thereby being antomatically released and arrested by contact with the driver, the pin remaining in the thus retracted position until after the driver has completed its stroke and partly finished its return or upward stroke and until theinstant the lower dog 1' is again forced into frictional engagement with the rising driver, thereby at substantially the same time advancing and introducing the free end of the pin between the shanks of the first and second tacks. Thus it will be seen that the pin againholds the row of tacks in check while having separated the forward tack, preparatory to discharging it into the chamber 19 when the driver passes above it.

In order to insure that the tack properly enters said chamberp I provide the implement with an auxiliary or secondary cut-oh. device. This latter consists essentially of a thin blade or arm f located between and at the lower portion of the two plates of the runway e. Itis fulcrumed to swing on the pinf', Figs. 4=and 5. The opposite or free end of said arm is provided with a slotted opening f and a substantially V-shaped or beveled projection f The latter is formed on the upper side of the oscillating arm and so arranged that in rising it will engage the rear side of the tacks point to insure that the tack will be properly deflected into the vertical chamber 19'.

The secondary cut-elf f is actuated by a small rod u fitted to move in a longitudinally extending groove a formed in the bore of the casing a contiguous to the plunger or reservoir connection 1). See Figs. 5 and b. The upper portion of said rod is cut away to form upper and lower stops a, 11. respectively. A bent pin or lug 19 secured to the connection 12' extends through the wall of the reservoir and into the said reduced portion of the rod; the arrangement being such that the rod is freely reciprocated up and down intermittingly in its seat by the engagement of the lug with the corresponding stops u, w The rod to extends downwardly through the casing its lower end a being bent laterally to enter the said slot f of the cut-olf lever, as clearly shown.

Between the adjacent inclined faces of the upper and lower feeder-plates e, aforming the runway, is interposed a guided endwise movable bar g having an elongated vertical opening 9 formed therein intermediate of its two side walls through which opening the driver 19 freely passes. See Fig. 8, &c. The upper edges of the bar adjacent to said opening are provided with fine notches or serrations 9 It will be seen that the under side of plate 6 is recessed at e to receive the head portion of the T-shaped agitator member 0; the latter having at each end V-shaped teeth 0' arranged to engage said notches 9 The central portion of the agitator forms a downwardly extending tongue 0 (Fig. 10), its lower edge being slightly inclined with respect to its head portion- The tongue lies freely in the opening g of the bar g, and is prevented from appreciable endwise movement by means of said recess e although at the same time the agitator moves up and down slightly during the" reciprocation of the bar,by reason of its engagement wit-h the serrated surface.

The means for actuating the agitator-carrying bar g is as follows: A lever n is fulcrumed at a within the chambered extension at of the casing; its lower end n being in engagement with a recess g formed in the forward end of said bar. The opposite or upper end of lever n is jointed to a link n which in turn is jointed at n to the lower portion of the driver-plunger b, as clearly shown in Figs. 4 and 5. Thus it will be seen that each half-stroke or reciprocation of the plunger produces a double-reciprocation of the bar g, since the upper end of lever n is vibrated to each side of a line drawn vertis cally through the fulcrum u The several movable parts are automatically returned to the normal position (shown in Figs. 1, 2 and 4) by means of connected upper and lower links d, d, joined respectively to the movable handle m and to the extension 0 of the stationary ring 0 The links are joined together at d and are provided with a spring 5, the latter being so mounted and arranged that the force thereof acts to return the handle 17%, &c., to the normal position, as before stated.

The lower end of the casing to is provided with a small projecting hub or boss a the same forming a combined guide and bearing p for the driver p, and through which boss the tacks are projected by the action of the driver. The sides of the boss or nozzle are oppositely slotted to receive yielding or springjaws p. See sheet l-of the drawings. These jaws are so constructed and arranged that a tack introduced into the chamber 10 is arrested by them thus not only preventing the point from protruding but holding the tack in position to be acted upon by the descending driver. The jaws yield sufficiently to permit the passage of'the tack and driver while the tack is being driven. See Figs. 2 and 3.

From the foregoing description of my improved tack-driver it will be apparent that the action of the several parts, coincident with depressing the handle m from the normal position (Fig. 4) to the extreme position (Fig. 5), during the first half-reciprocation of the double-stroke will be'substantially as follows,- assuming of course that the reservoir contains loose tacks,a number of tacks being supported in the runway and held in check by pin h and that a tack is in position at the mouth of the nozzle: The first effect of such action is to move the bar g endwise, thereby vibrating the 'row of-tacks occurs when the beveled end i of the driver-holder b, in its downward movement, engages the lower dog 2' of the cut-off lever At the same time also the column or row of tacks advance and are arrested and held in check by thedriver, as before stated. The driver meanwhile is being forced downwardly to its limit, thereby engaging the standing tack and forcing it into the leather or material beneath, the jaws 10 yieldingsufliciently for the purpose. Figs. 3, 5 and 8, show the relative position of the parts at the completion of the half-stroke.

Upon removing the pressure somewhat from the handle an the spring 3 automatically returns the driver, &c., to the normal.

position. While thus returning the tacks mounted in the runway will be again agitated, as before described, and the point of the cutoff pin h introduced between the first and second tacks upon the runway by the action of lever'i, 850. Just beforethe driver will have completed its upward or return stroke, the lug or dog 17 secured to the reservoir connection 1; contacts with the upper stop to of the normallystationary rod 11., thereby lifting the latter and thus elevate the blade f into engagement with the rear side of the point portion of the forward tack. Fig. 9 shows the corresponding relation of the parts. 4 At substantially the same instant that the driver finishes its upward stroke (see dotted line) the bladef will have been advanced to the broken line position (Fig. 9), thereby causing the beveled pointf thereof to properly deflect the forward tack into the driver-chamber where it is arrested by the spring-jaws 19 Fig. 2 also shows the driver, &c., at the end of its stroke, the cutofi pin it at the same time holding the row of tacks in check. Thus it will be apparent that the action of the agitator combined with that of the tack carrying reservoir insures that the tacks are fed to the runway and are prevented from becoming lodged or stalled therein. It is also obvious that the combined action of thecutoff pin it and secondary cut-offf operate positively to properly place a tack in position tofbe acted upon by the driver at each doublereciprocation of the implement.

I claim as my invention- 1. In atack-driver of the class hereinbefore described, the combination of a stationary inclined runway or chute for the tacks and communicating with a vertical plunger-chamber,a tack-agitating device locatedin said runway near its delivery end, a vertically reciprocating tack-holding reservoir communicating with the upper end of the runway, a cut-off device for separating the advance or forward tack from the row of tacks on the runway after it has passed said agitating device, a secondary cut-01f device located below and working at substantially right angles to the first named cut-off arranged to engage the point portion of the advanced tack and deflect it into the plunger-chamber, and a vertical driving-plunger arranged to work substan' tially parallel with the said reservoir, all constructed, connect ed and arranged with respect to each other, whereby the movement of the plunger, as in driving thetack, brings the several parts into action, substantially as described and for the purpose set forth.

2. In a tack-driving implement provided with a vertically reciprocating tack-holding reservoir and a stationary inclined runway leading therefrom, the combination therewith of a vertically movable driving-plunger arranged to be reciprocated back and forth past the lower or delivery end of said runway, an initial cut-oflf device, as h, arranged to be worked in a horizontal plane with respect to said plunger for separating the advance or foremost tack from the row of tacks on the runway, and a secondary cut-off device located below and working at substantially right angles to the initial cut-off, arranged to supplement the work of the latter by engagjug the point portion of said advance tack and deflect it into the path of the plunger, substantially as described and for the purpose set forth.

3. In a tackdriving implement, a vertically movable tack-carrying reservoir and a stationary runway or chute communicating therewith, in combination with a vertically movable driving-plunger arranged to reciprocate to and fro past the end of said runway, a tack-agitating device located in the path of said runway provided with a downwardly extending tongue arranged to engage the heads of the tacks and means for feeding the advance or forward tack directly from the runway into the path of the plunger, said tack then to be operatedupon by the plunger without intermediate mechanism. substantially as hereinbefore described.

4. In a tack-driving machine, a casing or housing, as a, and a runway or chute secured thereto provided with a tack-agitating device, in combination with a vertically movable tackholding reservoir, as a", inclosed by said casing and in continuous communication with said runway and mechanisms for feeding the tacks singly from the runway and driving them, substantially as described.

5. In a tack-driving machine, provided with a stationary inclined tack-supporting runway or chute arranged to receive the tacks from a suitable source and a driving plunger, as 1), arranged to be reciprocated past the lower end of the runway, the combination therewith of the pivotally mounted cut-0E lever or blade f located between the sides of the runway, having a wedge-shape portion f on its upper side arranged in moving upwardly to engage the lower portion of the foremost tack supported on the runway and deflect it into the path of the plunger to be acted upon by the latter and a suitably mounted movable connection, as u, for intermittingly actuating blade f, substantially as described.

6. In a tack-driving machine, a fixed runway for the tacks consisting essentially of a pair of laterally separated inclined plates, as 6, having beveled upper edges arranged to receive and support the tacks, an oppositely inclined member e and a movable tack-agitating device interposed between the adjacent faces or edges of said parts e, 6 substantially as shown and described.

7. In a tack-driving machine, the combination with a runway or chute for feeding the tacks to the driver singly,of the endwise movable serrated bar g mounted in the runway, an agitator plate 0 in engagement with said bar having a tongue extending downwardly therefrom adapted to engage the heads of the tacks, and means for reciprocating the bar to and fro, substantially as described and for the purpose set forth.

8. In a tack driving machine, the combination with the guided driving-plunger and movable handle-member, as m, secured thereto, of the spring-resisted lever connection jointed to said handle-member and to the shell or casing, substantially as described.

9. In a tack-driving implement, a tack-agitating device arranged at an angle with respect to the driving-plunger, consisting in the combination with a fixed runway for the tacks composed of upper and lower portions or sections, 2 ,12, of a mechanically reciprocating notched or serrated bar, as g, interposed between the said runway sections, and an agitator plate, as 0, let into the upper section 6 and in engagement with the notched portion of the bar g, provided with a downwardly extending tongue adapted to contact with the heads of the tacks, arranged whereby the endwise movement of the notched bar vibrates the agitator-plate for the purpose hereinbefore set forth.

In testimony whereof I have aflixed my signature in presence of two witnesses.

CHARLES D. ROGERS.

Witnesses:

GEO. H. REMINGTON, IDA M. WARREN. 

